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Hen of the Woods (Maitake) Mushroom Plug Spawn

Strain: Grifola Frondosa

From £10.99 Inc. VAT

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1 hour Q+A Webinar add on

Boost your kit or spawn purchase by booking a spot on one of our Q+A webinars, hosted by our mushroom growing course tutor Scribe! Covering aspects of hobbyist mushroom growing, this extra experience is sure to add special value to a gift for yourself or a loved one! By purchasing any kit or hobbyist spawn product you are automatically getting 50% off a spot in the webinar!

  • Seminars *

    Seminar 09/05/23 – 7pm + £9.00
    Seminar 11/04/23 – 7pm + £9.00
    Seminar 13/06/2023 – 7pm + £9.00

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Product Overview

Our Hen of the Woods (Grifola Frondosa) plug spawn is ready for inoculation the second it turns up at your home.  Our spawn is made in labs and stored in breathable bags meaning that it is free from all other competing species. 

All of our spawn boasts a very low generational count. The lower the generation of the spawn, the nearer to the original spore sample, so at only the fourth generation, this spawn is guaranteed to be both high-quality and dependable.

 ‘Hen of the Woods’ will live up to its name and bring you a high yield. Instead of eggs, you’ll harvest vibrantly coloured and strong flavoured mushrooms with a naturally sweet taste. 

  • Suitable for all customers from hobbyists to professionals
  • A nutty, sweet tasting mushroom
  • Large fruiting bodies for plenty of produce
  • Will bring harvests of mushrooms, year after year

Please read below for more species and grow information, specifications, and video. 

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Product Description

In Japan this mushroom has earnt the name ‘king of mushrooms’ for its ability to grow to over 100 pounds! Growing your own mushroom affords you the chance to experiment with variables within the natural process, like temperature and humidity, and see whether you too can grow a giant mushroom. 

Our Hen of the Woods comes on a wood carrier, replicating how it naturally grows on large trees. Cultivating mushrooms from logs can take a year to see the fruits of your labour flourish from your log grow. By growing mushrooms throughout the four seasons, you begin working towards a long-term form of food sustainability. A log grow will bring you harvests of mushrooms for up to eight years; if you want to explore a world of mushrooms beyond the supermarket shelf, then this is the spawn for you. 

Reconnecting with natural growing processes, like log grows, offers a fresh and nutrient rich meal in any environment, without the need to go shopping. Log grows also remove the part packaging plays in so many of our meals. In offering you the highest quality, fresh living spawn, we hope you will be able to take away what urban growing could mean for our planet. 

All our spawn is stored in specialist breathable Microsac bags. This ensures that the spawn is always at its freshest, from our fridges to yours.

For larger quantities, check out our wholesale collection. 

Growing your own Hen of the Woods mushrooms is a straightforward process. We’ve got a further guide on how to inoculate logs on our website, and extensive customer aftercare is always available. Inoculation of a log is a process involving drilling into a log and hammering the spawn dowel into the hole, before sealing with wax. 

Log Types: Logs of healthy freshly cut (2 weeks – 10 weeks) hardwoods are most suitable such as Oak. Avoid coniferous wood types.

Log size: Up to 1.25m long and 10-20cm diameter is ideal (the larger the log the longer to colonisation and the greater the production).

How to inoculate: Use roughly 40-50 plugs per 50cm length (you can speed up colonisation by increasing the density). Use an 8mm drill bit to a depth of 5-6cm and spacing of 10-15cm between holes. Seal with a natural food grade wax to help retain moisture and keep out competing organisms.

When to inoculate: Logs can be plugged anytime although not in frosty conditions is best. Best time to cut is when trees are dormant (winter and early spring).

Fruiting Season: Late summer to early autumn 

Cultivation Info

Binomial nomenclatureGrifola frondosa
Old nomenclatureNone
Inoculation ratemix with ± 1% spawn
Natural substratecomposition:80% hardwood, mixed fine + coarse
10% cereals
10% bran
Incubationroom temperature:23 °C
substrate temperature:25 °C
duration:Ca. 18 days
Primordia induction(night time)* temperature:18-24 °C
relative humidity90- 95 %
Fruiting conditionsroom temperature:12-18 °C
relative humidity:90-95%
CO2-concentration:2000-5000 ppm
light:200 lux
interval:20-30 days
between flushes:
Total production cycle
Average yieldApprox. 150 g saleable mushrooms per kg fresh substrate†

*Primordia are induced by a shock. For most mushroom species, this is done with a thermal shock, which is defined by the minimum temperature during the day-night cycle.

†Mushroom weight immediately after harvesting, and wetted substrate weight prior to inoculation.

Important remark: the cultivation guidelines in our technical data sheets are a compilation of the data given to us by experienced cultivators. Individual differences in the cultivation conditions can seriously affect the results.

Additional information

Weight3 kg
Package size

50 (approx.), 1000 (approx.)

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